འཕགས་མ་སྒྲལ་མ་འཇགས་པ་བརྒྱད་ལས་སྐྱབ་པའ་མད notes.6

Tārā Who Protects from the Eight Dangers notes.6

6. Quintessence (hṛdaya, snying po) here refers to a dhāraṇī that is considered to encapsulate the essence of a deity, in this case Tārā.